As to the substance, arrangement, and so on of the earth and sky there remain one or two ideas not already given in connection with the general creation. The Tlascaltecs, and perhaps others of the Anáhuac peoples, believed that the earth was flat, and ending with the sea-shore, was borne up by certain divinities, who when fatigued relieved each other, and that as the burden was shifted from shoulder to shoulder earthquakes occurred. The sea and sky were considered as of one material, the sea being more highly condensed; and the rain was thought to fall not from clouds but from the very substance of heaven itself.[III-36] The Southern Californians believed that when the Creator made the world he fixed it on the back of seven giants, whose movements, as in the preceding myth, caused earthquakes.[III-37] The sky, according to certain of the Yucatecs, was held up by four brothers called each of them Bacab, in addition to their several names, which seem to have been Kan, Muluc, Ix, and Cauac. These four, God had placed at the four corners of the world when he created it, and they had escaped when all else were destroyed by flood.[III-38]

In the interior of the earth, in volcanoes, subterranean gods were often supposed to reside. The Koniagas, for example, held that the craters of Alaska were inhabited by beings mightier then men, and that these sent forth fire and smoke when they heated their sweat-houses or cooked their food.[III-39]

The Works of Hubert Howe Bancroft, Volume 3 — Part 94

The rugged majesty of hills and mountains has not been without its effect on the reverential mind of the American aborigines. Direct worship was unusual, but several incidents must have already informed the reader that a kind of sanctity is often attached to great elevations in nature. A predilection for hills and mounds as landmarks and fanes of tradition, and as places of worship, was as common among the Americans as among the people of the old world. The Choles of the province of Itza had a hill in their country that they regarded as the god of all the mountains, and on which they burned a perpetual fire.[III-40] The Mexicans, praying for rain, were accustomed to vow that they would make images of the mountains if their petitions were favorably received;[III-41] and, in other points connected with their religion to show, as has appeared and will appear both with them and with other people, their recognition of a divinity abiding on or hedging about the great peaks. What wonder, indeed, that to the rude and awe-struck mind, the everlasting hills seemed nearer and liker heaven than the common-place level of earth? and that the wild man should kneel or go softly there, as in the peculiar presence of the Great Spirit? This is hardly a new feeling, it seems an instinct and custom as old as religion. Where went Abraham in that awful hour, counted to him for righteousness through all the centuries? Where smoked the thunderings and lightnings that heralded the delivery of the Law, when the son of Amram talked with Jehovah face to face, as a man talketh with his friend? Whence saw a greater than Moses the kingdoms of the world and the glory of them? whence, in the all-nights that came after, did the prayers of the Christ ascend? and where stood he when his raiment became as no fuller on earth could white it; Moses and Elias talking with him, and Peter so sore afraid?

The Works of Hubert Howe Bancroft, Volume 3 — Part 94